Last week I saw a core async webinar where David Nolen of Cognitect presented the use of core async with its channels and go blocks in a frontend application using…
It is now about four and a half years since the Servlet 3.0 specification was released in December 2009, together with Java EE 6. One feature that came in Servlet…
The actor model (Wikipedia) An actor is an entity that you can send messages to. In response to a message an actor can do any of the following: * Send…
I previously wrote a blog post titled Performing any Selector on the Main Thread detailing a convenience category on NSInvoication for easily creating invocation objects that could be invoked on…
Apple provides many tools for implementing concurrency in your application. NSOperationQueue, GCD, or simply using performSelectorInBackground:withObject: that is available on each and every object, are just some examples. The tools…
In Java you have for quite some time had the Future interface for encapsulating an asynchronous calculation. Cocoa has had the abstract NSOperation class to encapsulate asynchronous operations. NSOperation do…
Introduction Testing asynchronous systems is hard. Not only does it require handling threads, timeouts and concurrency issues, but the intent of the test code can be obscured by all these…
Many UI frameworks, including AppKit for Mac OS X and UIKit for iPhone OS, require that all methods to UI components are sent on the main UI thread. Cocoa and…
The megahertz race is over, and instead we get more execution cores. This means that we as developers must make our applications parallel, in order to take advantage of the…
In order to embrace the true Christmas spirit, I thought I'd share a few goodies from the Devoxx conference that took place in Antwerp, Belgium in mid December. Devoxx is…
We have got the privilege to borrow an Azul Vega 1 which is the smallest of Azul's monster machines. This evening a bunch of us Jaywayers gathered to try it out. Installing the Azul JVM was painless and all of us were up and running very quickly. Read more...
Prior to Java 5, most people associated concurrency in Java with the Thread and Runnable concepts. That has all changed now! We now have a compelling high-level API at our…